Road surface cleaning and spraying device for road construction

Abstract

The invention provides a pavement cleaning and spraying device for road construction, and mainly relates to the technical field of pavement construction. A road surface cleaning and spraying device for road construction comprises a sweeper body, a cab and a water tank, a controller used for controlling operation of all parts of the device is arranged in the cab, a sweeping assembly is arranged at the bottom of the sweeper body, and a swing arm type sweeping assembly is arranged on the side, provided with the cab, of the sweeper body. A spray head is arranged at the bottom of the swing arm type cleaning assembly and communicated with the water tank. The device has the beneficial effects that the device effectively solves the problem of sweeping blind areas in special areas of airport roads through a dual sweeping structure of the fixed sweeping assembly and the swing arm type sweeping assembly in cooperation with the radar detector.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of road construction technology, and in particular to a road surface cleaning and spraying device for road construction. BACKGROUND

[0002] Airport roads, as the core hub connecting aviation transportation and ground transportation, the quality of their pavement is directly related to the safety of aircraft ground sliding, the efficiency of passenger and cargo transportation, and the overall safety and stability of airport operation. Compared with ordinary municipal roads, airport roads (including runway connecting roads, apron access roads, and main roads in front of terminal buildings) have much higher safety requirements in terms of construction standards, road surface cleanliness requirements, and complexity of working environment. Currently, the road surface pretreatment operation before airport road construction mainly relies on the combination of traditional manual cleaning and ordinary municipal cleaning equipment, which has the following significant technical defects: Traditional manual cleaning relies on brooms, shovels and other tools, which requires a team of 15-20 people to clean an area of 5000-10000㎡ of airport road in a single operation. It is difficult to completely remove small sand and solidified mud in the gaps of the road surface. Although ordinary municipal cleaning vehicles can achieve mechanized operation, the angle of the cleaning brush is fixed, and it cannot accurately clean the special areas such as kerb stones, road joints, and manhole covers, resulting in these areas becoming blind spots for cleaning. This can cause problems such as poor adhesion of asphalt and base during subsequent paving, which shortens the service life of the road surface. SUMMARY

[0003] To solve the problems of the prior art, the present application provides a road surface cleaning and spraying device for road construction, which is achieved by the following technical solutions: The utility model provides a road construction road surface cleaning and spraying device, including the main part of sweeper, cab, water tank, the cab is equipped with the controller for controlling the operation of each component of device, the main part of sweeper bottom corresponds the wheel of cab below position installation, the wheel connects the system of advancing, the system of advancing is connected with controller electricity, can adjust the advancing speed and direction through controller, the water tank is fixedly installed in the other side of main part of sweeper away from cab, the water tank top is equipped with the water inlet, the water inlet is equipped with the sealing cover, the water level sensor is installed in the water tank, the water level sensor is connected with controller electricity, can monitor the water amount in the water tank in real time and data transmission to controller, the controller is connected with display screen, can show the water level information in the cab, the bottom of main part of sweeper is provided with cleaning assembly, the cleaning assembly includes lifting support, drive motor, cleaning brush and connecting seat, the front and rear sides of main part of sweeper bottom are fixedly installed lifting support, the lifting support is fixed on the front and rear sides of main part of sweeper bottom, the movable end of lifting support is fixedly connected with connecting seat through bolt, the top surface of connecting seat is fixedly installed drive motor, the output shaft of drive motor penetrates connecting seat and is rotatably connected with connecting seat through bearing, the output end of drive motor is fixedly connected with cleaning brush through shaft coupling, one side of main part of sweeper installation cab is equipped with swing arm type cleaning assembly, the bottom of swing arm type cleaning assembly is equipped with spray head, the spray head is connected with water tank. Further, the swing arm type cleaning assembly includes a support arm, a swing arm, a first telescopic rod, and a second telescopic rod. One end of the support arm is hingedly connected to the front end of the sweeper main body through a pin shaft. The other end of the support arm is hingedly connected to one end of the swing arm through a pin shaft. One end of the first telescopic rod is hingedly connected to the front end of the sweeper main body. The other end of the first telescopic rod is hingedly connected to the middle of the support arm. One end of the second telescopic rod is hingedly connected to the side wall of the end of the support arm away from the sweeper main body. The other end of the second telescopic rod is hingedly connected to the top of the swing arm. The first telescopic rod and the second telescopic rod are both electric telescopic rods and are electrically connected to the controller. The length of the telescopic rod can be adjusted to change the angle of the support arm and the swing arm through the controller. The bottom of the end of the swing arm away from the support arm is fixedly installed with a drive motor and a cleaning brush, which have the same structure as the cleaning assembly. A row of spray heads are evenly arranged along the length direction of the bottom of the swing arm. The spray heads are connected to the water tank through a water pipe.

[0004] Further, the water pipe is a high-pressure hose, and the outside of the water pipe is wrapped with a wear-resistant protective sleeve. A high-pressure water pump is installed on the water pipe and located between the outlet of the water tank and the spray heads. The high-pressure water pump is electrically connected to the controller, and the water pressure can be adjusted through the controller.

[0005] Further, the front part of the sweeper body is fixedly provided with a radar detector, and the detection direction of the radar is towards the ground, the radar is electrically connected with the controller, the position, size and distribution of the sand on the ground can be detected in real time, and the detection data is transmitted to the controller, the controller automatically adjusts the telescopic length of the first telescopic rod and the second telescopic rod according to the data transmitted by the radar, and then adjusts the angle of the supporting arm and the swing arm, so that the sweeper brush on the swing arm can accurately sweep the sand at different positions.

[0006] Further, the spray head is an adjustable atomizing spray head, an adjusting knob is arranged on the spray head, the water atomization degree can be manually adjusted, and the spray head is connected with the swing arm through a ball joint, and the spray angle of the spray head can be adjusted.

[0007] Further, the top of the frame body is provided with a warning light and an alarm, the warning light and the alarm are electrically connected with the controller, when the device operates, the warning light flashes, the alarm emits a prompt sound, and surrounding personnel are reminded to pay attention to safety, when the device fails, the alarm emits an alarm sound, and the warning light becomes red and always on.

[0008] Further, the bristles of the sweeper brush are made of wear-resistant nylon material, and the surface of the bristles is provided with anti-skid lines.

[0009] Compared with the prior art, the beneficial effects of the present application are: The device solves the problem of blind area cleaning in special areas of the airport road through the double cleaning structure of the fixed cleaning assembly and the swing arm type cleaning assembly, cooperates with the radar detector, the fixed cleaning assembly can comprehensively cover and clean the road surface directly below the vehicle body, the swing arm type cleaning assembly can be controlled by the controller to accurately extend and retract the first telescopic rod and the second telescopic rod, drive the sweeper brush to flexibly adjust the angle, and target cleaning is performed on the areas that are difficult to reach by traditional equipment, such as the kerb stone around the airport road, the joint of the road surface, and the edge of the well cover, the sweeper brush made of wear-resistant nylon material and provided with anti-skid lines can completely remove small sand and solidified slurry, and the cleaning precision meets the strict standard of "no residue" of the airport road. At the same time, the device integrates the mechanical cleaning and spraying functions, does not need manual assistance, and can be operated by a single person, compared with the traditional manual cleaning team, the operation efficiency is greatly improved, and the construction progress is ensured to be on schedule. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic view of the present application; Figure 2 is a front view of the present application; Figure 3 is a side view of the present application; Figure 4 is Figure 1 is a partial enlarged view of Figure 5 is a structural schematic diagram of the swing arm type cleaning assembly of the present application.

[0011] Reference signs shown in the drawings: 10, cleaning vehicle body; 20, cab; 30, water tank; 40, cleaning assembly; 401, lifting support; 402, driving motor; 403, cleaning brush; 404, connecting seat; 50, swing arm type cleaning assembly; 501, support arm; 502, swing arm; 503, first telescopic rod; 504, second telescopic rod; 60, spray head; 601, water pipe; 70, high-pressure water pump; 80, warning light; 801, siren. DETAILED DESCRIPTION

[0012] The present application will be further described in conjunction with the drawings and specific examples. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various modifications or modifications to the present application, and these equivalent forms also fall within the scope defined by the present application.

[0013] Embodiment: a road construction pavement cleaning and spraying device As shown in Figures 1-5 a road construction pavement cleaning and spraying device: The device takes the cleaning vehicle body 10 as the core bearing frame, and is made of high-strength steel by welding. The vehicle body length is 5.2m, the width is 2.3m, and the height is 2.8m, which ensures the structural stability during operation. The cab 20 is arranged at the front left side of the cleaning vehicle body 10. The inside is equipped with a controller with a touch screen. The controller and each electric component of the device are electrically connected through waterproof cables. The driver can operate the device in real time through the touch screen. Four groups of explosion-proof tire wheels are installed at the bottom of the cleaning vehicle body 10 corresponding to the cab 20. The wheels are connected to a traveling system driven by a variable frequency motor. The traveling speed can be adjusted to 0.5-3km / h through the controller to meet the traveling needs under different cleaning intensities. The water tank 30 is fixedly installed at the right rear of the cleaning vehicle body 10 away from the cab 20. The water tank 30 is made of 304 stainless steel and has a volume of 800L. A water filling port with a diameter of 15cm is provided at the top. A screw type sealing cover with a silica gel sealing ring is provided at the water filling port to prevent water leakage during transportation or operation. A stainless steel support is welded on the inner side wall of the water tank 30. A drop-in type water level sensor is fixedly installed on the support. The sensor probe is deep into the bottom of the water tank to monitor the water level change in real time. The monitoring data is transmitted to the controller through a wireless module and displayed on the touch screen of the cab 20 connected to the controller in the form of percentage. When the water level is lower than 15%, the touch screen will pop up a red warning prompt to remind the driver to add water in time. The cleaning assembly 40 is provided with two groups, which are respectively installed on the front and rear sides of the bottom of the cleaning vehicle body 10. Each cleaning assembly 40 includes two lifting supports 401, one driving motor 402, one cleaning brush 403 and one connecting seat 404. The lifting support 401 adopts an electric hydraulic push rod structure, the cylinder body top is fixedly connected with the embedded steel plate at the bottom of the cleaning vehicle body 10 through bolts, the push rod stroke is 10-80 cm, and the lifting height can be adjusted through the controller. The movable end push rod top of the lifting support 401 is fixedly connected with the top surface of the connecting seat 404 through M12 bolts. The connecting seat 404 is made of cast iron material, the driving motor 402 with a power of 3 kW is fixedly installed on the top surface of the middle part through bolts, the output shaft of the driving motor 402 penetrates the center hole of the connecting seat 404, and double-row angular contact sealed bearings are installed between the connecting seat 404. The bearing outer ring is interference-fitted with the hole wall of the connecting seat 404, and the inner ring is interference-fitted with the output shaft, which can effectively block the dust and sewage on the road from entering the bearing interior, prolonging the service life of the motor. The output end of the driving motor 402 is fixedly connected with the rotating shaft of the cleaning brush 403 through an elastic coupling. The bristles of the cleaning brush 403 are made of wear-resistant nylon material with a diameter of 0.8 mm, the bristle length is 15 cm, and the surface is pressed with inclined anti-skid lines to improve the cleaning adhesion to stubborn sandstone. The diameter of the cleaning brush 403 is 60 cm, and the rotating speed can be adjusted to 120-300 r / min through the controller. The swing arm type cleaning assembly 50 is installed at the front end of the cleaning vehicle body 10 provided with the cab 20, and includes a support arm 501, a swing arm 502, a first telescopic rod 503, and a second telescopic rod 504. The support arm 501 is made of a seamless steel pipe, has a length of 2.5 m, and is connected to the hinge lug at the front end of the cleaning vehicle body 10 through a pin shaft, and can rotate up and down about the pin shaft. The other end of the support arm 501 is hingedly connected to one end of the swing arm 502, which is also made of a seamless steel pipe and has a length of 2.2 m. The first telescopic rod 503 and the second telescopic rod 504 are both electric telescopic rods of model XTL100, with a rated thrust of 5000 N. One end of the first telescopic rod 503 is hingedly connected to the hinge seat on the side wall at the front end of the cleaning vehicle body 10, and the other end is hingedly connected to the reinforcing lug in the middle of the support arm 501. Through the extension and contraction of the first telescopic rod 503, the support arm 501 can be rotated about the root pin shaft, and the angle can be adjusted within a range of -15° downward inclination to 30° upward lifting. One end of the second telescopic rod 504 is hingedly connected to the side wall lug at the end of the support arm 501 away from the cleaning vehicle body 10, and the other end is hingedly connected to the welded lug at the top of the swing arm 502. Through the extension and contraction of the second telescopic rod 504, the swing arm 502 can be rotated about the hinge point with the support arm 501, and the angle can be adjusted within a range of -30° outward inclination to 20° inward inclination. The extension and contraction speeds of the first telescopic rod 503 and the second telescopic rod 504 can be individually adjusted through the controller. At the bottom of the end of the swing arm 502 away from the support arm 501, a driving motor 402 and a cleaning brush 403 identical in structure to the cleaning assembly 40 are fixedly installed through bolts, so as to clean the road surface on both sides in front of the cleaning vehicle body 10. Meanwhile, along the length direction of the bottom of the swing arm 502, there are uniformly fixed eight spray heads 60 through clamps at intervals of 25 cm. Each spray head 60 is connected in communication with a main water pipe 601 through a branch water pipe. The other end of the main water pipe 601 extends to the bottom outlet of the water tank 30 through a through hole in the side wall of the cleaning vehicle body 10. The water pipe 601 is a high-pressure steel wire braided flexible pipe with an inner diameter of 25 mm, and the working pressure can reach 10 MPa. Moreover, the outer side of the water pipe 601 is wrapped with a polyurethane wear-resistant protective sleeve with a thickness of 3 mm, so as to avoid the water pipe being rubbed or scratched by sharp sand during operation. Between the outlet of the water tank 30 and the spray head 60 on the water pipe 601, a high-pressure water pump 70 of model 3WZ-80 is fixedly installed through a flange. The rated power of the high-pressure water pump 70 is 5.5 kW, and the high-pressure water pump 70 is electrically connected with the controller. The driver can adjust the water outlet pressure to 2-8 MPa through the touch screen in the cab 20, so as to meet the washing needs of different road surface stains. For example, when cleaning ordinary dust, the pressure is adjusted to 2-3 MPa; when washing solidified mud, the pressure is adjusted to 6-8 MPa. The spray head 60 adopts an adjustable atomizing high-pressure spray head, and the front end of the spray head is provided with a scale adjusting knob. Clockwise rotation of the knob can reduce the water outlet aperture, improve the atomization degree, counterclockwise rotation can increase the water outlet aperture, and enhance the water flow impact force. The atomization degree adjustment range is from 30° wide-angle atomization to 120° straight water flow. At the same time, the spray head 60 is connected with the mounting seat at the bottom of the swing arm 502 through a ball joint. The adjustment angle range of the ball joint is -45° to 45°. The spray direction of the spray head 60 can be manually adjusted according to the operation requirements. For example, when sweeping the curbstone, the spray head angle can be inclined outward to avoid water splashing onto the sidewalk outside the curbstone. A millimeter wave radar detector with a model of TF02 is fixedly installed at a position below the right side of the driver's cabin 20 at the front of the sweeper main body 10. The detection direction of the radar is vertically towards the ground, and the detection range is an area of 1.5-5m in front and 2.5m in width. The radar can scan the position, size, minimum identification particle size of 5mm and distribution density of the ground sand and gravel in real time, and transmit the detection data in the form of coordinates to the controller. The controller has an intelligent sweeping algorithm built-in. It can automatically judge the sand and gravel concentration area according to the data transmitted by the radar. For example, when a sand and gravel pile with a diameter of 10-15cm is detected at a position of 3m in front and right side, the controller will automatically control the first telescopic rod 503 to extend by 5cm, the second telescopic rod 504 to shorten by 8cm, the support arm 501 to tilt downward by 5°, and the swing arm 502 to tilt outward by 15°, so as to drive the sweeping brush 403 on the swing arm 502 to move accurately to the sand and gravel pile position, and at the same time, to increase the rotation speed of the sweeping brush 403 in this area to 280r / min, so as to realize targeted sweeping. One warning light 80 is fixedly installed at each of the four corner positions on the top of the sweeper main body 10 through bolts. The warning light 80 adopts an LED flashing light, with a working voltage of 24V and a flashing frequency of 10-15 times / s. At the same time, one siren 801 is installed on the side wall of the vehicle body on the right side of the driver's cabin 20. The sound pressure level of the siren 801 can reach 110dB. The warning light 80 and the siren 801 are electrically connected with the controller. When the device starts to operate, the controller will automatically trigger the warning light 80 to emit yellow flashing light, and the siren 801 to emit a voice prompt sound of "Please pay attention, road sweeping operation is in progress", to remind the surrounding construction personnel and passing vehicles to keep away. When the device fails, for example, when the water level sensor detects that the water level in the water tank 30 is lower than 10%, the current of the drive motor 402 is abnormally more than 1.5 times of the rated value, or the pressure of the high-pressure water pump 70 drops suddenly, the controller will immediately cut off the power supply of the faulty component, at the same time, control the siren 801 to emit continuous "beep" alarm sound, and the warning light 80 to change from yellow flashing to red constant light, until the fault is eliminated, and the normal operation can be restored through manual reset of the controller. Actual operation process Preparation stage: the driver opens the sealing cover of the water tank 30, adds clean water into the water tank through the water inlet until the water level reaches 90% on the touch screen of the cab 20, and then closes the sealing cover; after checking the connection of each part, the total power supply of the device is started, at this time the warning light 80 starts yellow flashing and the alarm 801 emits a voice prompt sound. Cleaning operation: the driver sets the travel speed to 1.5 km / h, the rotation speed of the cleaning brush 403 to 200 r / min, and the water outlet pressure of the high-pressure water pump 70 to 4 MPa through the controller, and simultaneously starts the radar detector; when the device travels forward, the lifting supports 401 of the two groups of cleaning assemblies 40 at the front and rear of the bottom are elongated, so that the cleaning brushes 403 contact the ground and clean the road surface directly below the vehicle body; the radar detector scans the road surface in front in real time, and when it detects a sandstone concentrated area on the left side, the controller automatically adjusts the first telescopic rod 503 and the second telescopic rod 504 of the swing arm type cleaning assembly 50, so that the cleaning brush 403 on the swing arm 502 moves to the target area and completes comprehensive cleaning in cooperation with the main cleaning assembly. Spraying operation: during the cleaning process, the spray head 60 continuously sprays high-pressure water flow to wash the cleaned road surface; the driver can adjust the water outlet pressure of the high-pressure water pump 70 through the controller or manually rotate the adjustment knob of the spray head 60 to change the atomization degree according to the dust condition of the road surface; when it is necessary to wash the gap of the curb stone, the ball joint of the spray head 60 can be manually adjusted to make the water flow directly shoot at the gap position. Emergency treatment: if the water level of the water tank 30 is lower than 15% on the touch screen during the operation process, the driver needs to drive the device to the nearest water source for water replenishment; if a motor fault alarm occurs, the vehicle needs to be stopped immediately, the wiring and bearing state of the driving motor 402 are checked, and then the operation is continued after the fault is eliminated. The position of the controller in the scheme is set by the staff according to the actual situation during operation, the controller is used for controlling the electrical devices used in the scheme, the controller is an Intel processor, an AMD processor, a PLC controller, an ARM processor or a single-chip microcomputer, and is matched with a mainboard, a memory bar, a storage medium and a power supply, the power supply is a commercial power supply or a lithium battery; when having a display screen, a display card is also provided; for the operation principle of the controller, please refer to Automatic Control Principle, Microcontroller Principle and Application Simulation Case and Sensor Principle and Application published by Tsinghua University Press, and other books in the field can be read for reference; other automation control and electrical devices not mentioned belong to the knowledge familiar to those skilled in the art, and will not be described here.

[0014] In the explanation of the application, it should be pointed out that the terms of nouns indicating directions are only for the convenience of description and understanding, and are not the only limitation on the installation position of specific technical features, and other installation modes that can be realized are not excluded.

[0015] The ordinal numbers of components used herein, such as "first", "second", etc., are merely intended for differentiating between the described objects, and do not have any sequential or technical meaning. The "connection" or "coupling" mentioned in the present application includes both direct and indirect connection (coupling) unless otherwise specified. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely used for facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as a limitation to the present application.

[0016] In the present application, unless otherwise explicitly specified and limited, the "on" or "under" of a first feature to a second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the "over", "above" and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0017] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A road surface cleaning spraying device for road construction, comprising a sweeper body (10), a cab (20), and a water tank (30), wherein the cab (20) is equipped with a controller for controlling the operation of various components of the device, and wheels are installed at the bottom of the sweeper body (10) corresponding to the position below the cab (20), the wheels being connected to a travel system, the travel system being electrically connected to the controller, and the travel speed and direction being adjustable by the controller; the water tank (30) is fixedly installed on the other side of the sweeper body (10) away from the cab (20), characterized in that: The water tank (30) is equipped with a water inlet on the top and a sealing cap. A water level sensor is installed inside the water tank (30) and is electrically connected to the controller. The water level sensor can monitor the water volume in the water tank (30) in real time and transmit the data to the controller. The controller is connected to a display screen and can display water level information in the cab (20). A cleaning component (40) is installed at the bottom of the sweeper body (10). The cleaning component (40) includes a lifting bracket (401), a drive motor (402), a cleaning brush (403), and a connecting seat (404). Lifting brackets (401) are fixedly installed on the front and rear sides of the bottom of the sweeper body (10). The lifting bracket (401) is fixedly installed on the front and rear sides of the bottom of the sweeper body (10). The movable end of the lifting bracket (401) is fixedly connected to the connecting seat (404) by bolts. The top surface of the connecting seat (404) is fixedly installed with a drive motor (402). The output shaft of the drive motor (402) passes through the connecting seat (404) and is rotatably connected to the connecting seat (404) by bearings. The output end of the drive motor (402) is fixedly connected to the sweeping brush (403) by a coupling. The sweeper body (10) is provided with a swing arm sweeping assembly (50) on the side where the cab (20) is installed. The bottom of the swing arm sweeping assembly (50) is provided with a nozzle (60). The nozzle (60) is connected to the water tank (30).

2. The road surface cleaning spraying device for road construction according to claim 1, characterized in that: The swing arm cleaning assembly (50) includes a support arm (501), a swing arm (502), a first telescopic rod (503), and a second telescopic rod (504). One end of the support arm (501) is hinged to the front end of the sweeper body (10) via a pin, and the other end of the support arm (501) is hinged to one end of the swing arm (502) via a pin. One end of the first telescopic rod (503) is hinged to the front side wall of the sweeper body (10), and the other end is hinged to the middle position of the support arm (501). One end of the second telescopic rod (504) is hinged to the side wall of the support arm (501) away from the sweeper body (10), and the other end is hinged to the top of the swing arm (502). Both the first telescopic rod (503) and the second telescopic rod (504) are electric telescopic rods and are electrically connected to the controller. The telescopic length can be adjusted by the controller to change the angle between the support arm (501) and the swing arm (502). The swing arm (502) is fixedly installed with a drive motor (402) and a cleaning brush (403) with the same structure as the cleaning assembly (40) at the bottom of one end away from the support arm (501). A row of nozzles (60) is evenly arranged at the bottom of the swing arm (502) along its length direction. The nozzles (60) are connected to the water tank (30) through a water pipe (601).

3. A road surface cleaning spraying device for road construction according to claim 1, characterized in that: The water pipe (601) is a high-pressure hose, and the outside of the water pipe (601) is wrapped with a wear-resistant protective sleeve. The high-pressure water pump (70) is installed on the water pipe (601) and is located between the outlet of the water tank (30) and the nozzle (60). The high-pressure water pump (70) is electrically connected to the controller, and the water pressure can be adjusted by the controller.

4. A road surface cleaning spraying device for road construction according to claim 1, characterized in that: A radar detector is fixedly installed at the front of the sweeper body (10), and the radar detection direction is facing the ground. The radar is electrically connected to the controller and can detect the position, size and distribution of sand and gravel on the ground in real time, and transmit the detection data to the controller. The controller automatically adjusts the extension length of the first telescopic rod (503) and the second telescopic rod (504) according to the data transmitted by the radar, and then adjusts the angle of the support arm (501) and the swing arm (502) so that the sweeping brush (403) on the swing arm (502) can accurately sweep the sand and gravel in different positions.

5. A road surface cleaning spraying device for road construction according to claim 1, characterized in that: The nozzle (60) is an adjustable atomizing nozzle. The nozzle (60) is equipped with an adjustment knob, which can manually adjust the degree of water atomization. At the same time, the nozzle (60) and the swing arm (502) are connected through a ball joint, which can adjust the spray angle of the nozzle (60).

6. A road surface cleaning spraying device for road construction according to claim 1, characterized in that: The top of the frame body (10) is equipped with a warning light (80) and an alarm (801). Both the warning light (80) and the alarm (801) are electrically connected to the controller. When the device is running, the warning light (80) flashes and the alarm (801) emits a warning sound to remind people around to pay attention to safety. When the device malfunctions, the alarm (801) emits an alarm sound, and at the same time the warning light (80) turns red and stays on.

7. A road surface cleaning spraying device for road construction according to claim 1, characterized in that: The bristles of the cleaning brush (403) are made of wear-resistant nylon material, and the surface of the bristles is provided with anti-slip texture.

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